'reach the amount' is correct and usable in written English.
You can use this phrase to express that a particular sum or amount has been achieved or obtained. For example, "Our charity drive was successful - we managed to reach the amount we had set as our goal."
Some basic maths told me that I only needed the entire population of Europe to donate €3.19 (£2.26) to reach the amount of the bailout fund.
(The church says that there are no fixed fees, adding, "Donations requested for 'courses' at Church of Scientology begin at $50 and could never possibly reach the amount suggested").
Her longstanding target of £100,000 was finally hit when, during the Pride of Britain awards ceremony, which named her fundraiser of the year, donations from the crowd helped her reach the amount.
The BS energy-saving ratio cannot reach the amount of BS power saving because the cells along the railway are not always in a passive state.
As TCC is used since 1957 in huge amounts[53], and MWCNT is supposed to reach the amount of a large scale production, both substances might involuntarily occur together in the environment.
Notably, the RNA from heart constitutes the entire preparation of this tissue; excess of brain RNA was introduced instead, to reach the amount required for sequencing library preparation.
Keith says that in order to reach the amounts of biochar needed to have an effect on global climate systems, massive amounts of organic material would have to be gathered in central locations.
According to the authors of the study, if CO2 levels increase at the same rate they are today, they will reach the amounts seen during the Miocene period by the end of this century.
However, as noted, the daily consumption of ruminant TFA cannot reach the amounts tested in these studies.
The union reached the amount that it says the reserve pool costs through a complex calculation.
The largest soot particle diameter measured was about 18 nm and the soot volume fraction reached the amount of 4.9 × 10−7.
